综合管廊等效均布活荷载取值研究  

Study on Equivalent Uniform Live Load for Utility Tunnel

作　　者：狄东超 强健[1] 王建[1] Di Dongchao Qiang Jian Wang Jian(Shanghai Municipal Engineering Design Institute （Group） Co., Ltd., 200092, Chin)

机构地区：[1]上海市政工程设计研究总院(集团)有限公司,200092

出　　处：《特种结构》2016年第6期47-51,共5页Special Structures

基　　金：国家重点研发计划(课题编号:2016YFC0802405)资助项目

摘　　要：本文通过对综合管廊汽车轮压等效均布活荷载取值进行分析,为综合管廊结构设计提供指导。本文针对综合管廊的结构特点,定性分析了汽车轮压等效均布活荷载的一般规律,并根据有限元模拟及桥涵有效分布宽度原理,定量分析了城-A级车辆荷载在覆土厚度为O.5m时的等效均布活荷载。结果表明,等效荷载与板跨大小、覆土厚度、板受力体系有关,单向板等效荷载值随着板跨度的增大而减小,随着覆土厚度的增加而渐减小,且计算跨径为2.9m时的定量结果为32kPa。定量结果结合定性结论,可直接用于工程设计,并为后续综合管廊设计提供指导。In order to provide a gnideline for structural design of utility tunnel, the determination of equivalent uniform load provided by vehicles is analyzed in this study. The general rule of equivalent uniform load provided by vehicles was illustrated qualitatively according to the structural characteristics of utility tunnel. Moreo- ver, based on the effective distribution width principle of bridges and culverts, the equivalent uniform live load of the grade-A vehicle load at 0. 5m covering soil thickness was analyzed quantificationally through finite element analysis. Results indicate that the equivalent load is related to the dimensions of floor slab, the thickness of cov- eting soil and the property of the slab. The equivalent uniform load of one-way slab decreased with the increase of the slab span and the covering soil thickness. Specifically, the equivalent uniform load is 32kPa when the slab span equals to 2. 9m. These quantificational and qualitative conclusions can be used for engineering design and provide guidance for utility tunnel design in the future.

关 键 词：综合管廊 等效均布活荷载 城-A级车辆荷载 

分 类 号：TU990.3[建筑科学—市政工程]